Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sach thu » sach thue, sach thieu, sach tham
thu bang » thu ban, thu hang, chu bang
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
bang ma » bang may, tang ma, ban ma
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach thu bang ma hoi. hieu ((ve cam) OR (va cam)) ((xuc va) or (tuc xa)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach thu bang ma hoi. hieu ((ve cam) OR (va cam)) ((xuc va) OR (tuc xa)) hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach thu bang ma hoi. hieu ((ve cam) OR (va cam)) ((xuc va) or (tuc xa)) hanh vai cua tre*".